Oh boy, what a subject for me to find. Last week they had a documentary on of all things but Gatorade and granola bars and energy bars, etc. The biggest load of bull granola that you can imagine. It's nothing more than marketing by use of sports to encourage it. End result, the human body has quite the capable system to regulate it's own electrolytes. One particular athelete that rode a statioary bike in the uphill mode for over 2 hours at a grueling pace was just, barely starting to show depeltion signs. As for the energy and granola bars, another over hyped sports media, shove it down your throat baloney. End solution was to maintain your body fluid levels by drinking pain old water and not even the stuff that comes in plastic bottles, just out of the tap. Don't like the chlorine, run it through a Brita filter.